Home / 135,148.37-186,501.83-74,721.56

Finding the Fourth Proportional to 135,148.37, 186,501.83 and 74,721.56

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Solution

The fourth proportional to 135,148.37, 186,501.83 and 74,721.56 is: 103,114.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,148.37 : 186,501.83 = 74,721.56 : x
  2. Step 2: Convert to fraction form
    135,148.37/186,501.83 = 74,721.56/x
  3. Step 3: Cross multiply
    135,148.37x = 186,501.83 × 74,721.56
  4. Step 4: Simplify right side
    135,148.37x = 13,935,706,374.34
  5. Step 5: Solve for x
    x = 13,935,706,374.34/135,148.37
  6. Step 6: Final answer
    x = 103,114.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.